DOI: 10.1063/1.1385557. Autophobic dewetting of homopolymer on a brush and entropic attraction between opposing brushes in a homopolymer matrix

Autophobic dewetting of homopolymer on a brush and entropic attraction between opposing brushes in a homopolymer matrix

10.1063/1.1385557

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The wetting behavior of homopolymer on a chemically identical polymer brush is mathematically equivalent to the interaction between a pair of opposing brushes in a matrix of parent homopolymer. We examine both systems using self-consistent field theory (SCFT) with a new highly efficient and accurate algorithm. Our calculations provide compelling evidence that the global minimum in the free energy curve remains at a finite film thickness, implying that the brush/homopolymer interfacial tension, γb/h, is always positive favoring dewetting, or equivalently that an attraction always exists between opposing brushes. Nevertheless, we identify a region at low homopolymer molecular weights where γb/h is negligible, in which case complete wetting is highly metastable and the attraction between opposing brushes is extraordinarily weak. Furthermore, we demonstrate that SCFT is in good quantitative agreement with experiment. In contrast, we find that earlier predictions based on strong-stretching theory are terribly inaccurate.

Bibliography

Matsen, M. W., & Gardiner, J. M. (2001). Autophobic dewetting of homopolymer on a brush and entropic attraction between opposing brushes in a homopolymer matrix. The Journal of Chemical Physics, 115(6), 2794â2804.

Authors 2

M. W. Matsen (first)
J. M. Gardiner (additional)

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Dates

Type	When
Created	23 years ago (July 26, 2002, 8:44 a.m.)
Deposited	1 year, 6 months ago (Feb. 6, 2024, 6:48 p.m.)
Indexed	1 month, 1 week ago (July 14, 2025, 11:31 p.m.)
Issued	24 years ago (Aug. 8, 2001)
Published	24 years ago (Aug. 8, 2001)
Published Print	24 years ago (Aug. 8, 2001)

Funders 0

None

BibTeX

@article{Matsen_2001, title={Autophobic dewetting of homopolymer on a brush and entropic attraction between opposing brushes in a homopolymer matrix}, volume={115}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1385557}, DOI={10.1063/1.1385557}, number={6}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Matsen, M. W. and Gardiner, J. M.}, year={2001}, month=aug, pages={2794–2804} }

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